Senior Backend / Systems Engineer (AI) - San Mateo, CA

TrustLab is a company focused on building AI and online safety systems, and they are seeking a Senior Backend / Systems Engineer to develop a robust backend architecture for diverse use cases. This role involves designing backend systems that support AI workflows and collaborating with various teams to ensure scalable and maintainable software systems.

Responsibilities:

• Design and build extensible backend systems that support flexible configurations for different customers and content types
• Develop infrastructure that interfaces cleanly with LLMs, enabling prompt engineering, context injection, and modular evaluation workflows
• Build tooling and platforms that enable fast iteration by AI engineers and analysts, including declarative pipelines, parameterized jobs, and reproducible experiments
• Prioritize ease of deployment, integration, and testing, both for internal teams and external partners
• Collaborate closely with product, data, and policy teams to translate nuanced safety needs into scalable, maintainable software systems